Date: Fri, 13 Feb 2015 22:57:04 +0000
From: Russell King - ARM Linux <linux@arm.linux.org.uk>
To: Simon Horman <horms@verge.net.au>
Cc: Stephen Boyd <sboyd@codeaurora.org>, linux-kernel@vger.kernel.org,
        linux-arm-kernel@lists.infradead.org,
        Mark Rutland <mark.rutland@arm.com>, Nicolas Pitre <nico@linaro.org>,
        Dave Martin <Dave.Martin@arm.com>, Magnus Damm <magnus.damm@gmail.com>,
        linux-sh@vger.kernel.org
Subject: Re: [PATCH v2] ARM: smp: Only expose /sys/.../cpuX/online if
 hotpluggable
Message-ID: <20150213225704.GF8656@n2100.arm.linux.org.uk>
References: <1423850799-4028-1-git-send-email-sboyd@codeaurora.org>
 <20150213202002.GB29727@verge.net.au>
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On Fri, Feb 13, 2015 at 03:20:04PM -0500, Simon Horman wrote:
> > -static int r8a7779_cpu_disable(unsigned int cpu)
> > -{
> > -	/* only CPU1->3 have power domains, do not allow hotplug of CPU0 */
> > -	return cpu == 0 ? -EPERM : 0;
> > -}
...
> Its not clear to me why r8a7779_cpu_disable() has been
> removed rather than replaced by r8a7779_cpu_can_disable()

This is the default if you don't provide a cpu_disable function, so it
should be removed irrespective of this patch.

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